Cleanup namespace usage in public/web/Web[A-M]*.h.

public/web/WebDOMError.h

Index: public/web/WebDOMError.h
diff --git a/public/web/WebDOMError.h b/public/web/WebDOMError.h
index 9e2adf76cf0c998d562b348f980d4ac1e0591b8b..869a542d72921c1622125505a78f6c4d1eea2612 100644
--- a/public/web/WebDOMError.h
+++ b/public/web/WebDOMError.h
@@ -42,10 +42,10 @@ class Value;
 template <class T> class Handle;
 }
 
-namespace blink { class DOMError; }
-
 namespace blink {
 
+class DOMError;
+
 class WebDOMError {
 public:
     ~WebDOMError() { reset(); }
@@ -69,12 +69,12 @@ public:
     BLINK_EXPORT v8::Handle<v8::Value> toV8Value(v8::Handle<v8::Object> creationContext, v8::Isolate*);
 
 #if BLINK_IMPLEMENTATION
-    explicit WebDOMError(const PassRefPtrWillBeRawPtr<blink::DOMError>&);
-    WebDOMError& operator=(const PassRefPtrWillBeRawPtr<blink::DOMError>&);
+    explicit WebDOMError(const PassRefPtrWillBeRawPtr<DOMError>&);
+    WebDOMError& operator=(const PassRefPtrWillBeRawPtr<DOMError>&);
 #endif
 
 protected:
-    WebPrivatePtr<blink::DOMError> m_private;
+    WebPrivatePtr<DOMError> m_private;
 };
 
 } // namespace blink